http://www.bluefieldacademy.com/set-chl/
This article will guide you to Google Chart API. It links to my website for guidance to Google Chart API Drawing Wizard.
Google Chart API, is provided by Google, is a way to draw charts, images, maps of your choice i..e you just want to insert the values in the url provided by google and paste it in address bar . The generated image will be PNG image. This article will guide you towards entering the major attributes. I will soon upload some additional stuff on it.
Visit my link http://googleapichart.freewaywebhost.com
The above link will direct you towards five charts
• Line chart
• Sparkline
• Bar chart
• Pie chart
• Venn diagram
Line Charts:
Cht: Chart’s type is the type of chart you are drawing. lc is a line chart, data points are spaced evenly along the x-axis and lxy a pair of data sets for each line you wish to draw, the first data set of each pair specifies the x-axis coordinates, the second the y-axis coordinates.
Chd: Chart’s data is separated by comma. Lets suppose you want to draw a line chart whose data is 0,30,60,70,90,95,100. Then a line chart will pass through these points.
Chs:Chart’s size is size of image you would like to view. It is defined in pixels.
Chco:Charts color should be given in hexa. It is used to compare two charts.
Chf: Chart’s background color is filled, it is optional attribute. If not enter you will view the default (white) background.
Chxt: Chart’s axis lets says chart consist of x and y axis only. All axis must be defined here for example if chart is drawn on x, y and z axis.
Chxl: Chart’s label is the x, y and z axis labeling. For example x axis represent Jan, Feb, March, April, May, June, July. All values must be separated by “|” (pipe sign)
Pie Charts
Cht: Charts type should be p is a two dimension pie chart or p3 which is a three-dimension pie chart).
chd, chs, chco, chf are same as line chart.
Chl will define charts label. Since there are no axis in Pie Chart, so no need of axis attribute.
Sparkline All attributes are same as line chart.
Cht:Charts type should be ls for sparklines.
Venn Diagram
The chd, chs, chco, chf attributes are same as line chart.
Cht:Charts type should be v for
Venn Diagram.
Chdl: Defines chart’s label in Venn Diagram.
Bar Chart The chd, chs, chco, chf , chxt, chxl attributes are same as line chart.
Cht:Chart’s type should be bhs is a horizontal bar chart with one or more data sets, bvs is a vertical bar chart with one or more data sets, bhg is horizontal bar chart with one or more data sets; multiple data sets are grouped or bvg. is vertical bar chart with one or more data sets; multiple data sets are grouped.)
Chdl:Defines chart’s label as in Venn Diagram.
That’s all about this article.
Hope my article will prove helpful to you.
For queries, comments or suggestions, please mail me at sania_1611@yahoo.com
Enjoy Google Chart API Drawing Wizard 
About the Author:
Name:Sania Akbar
Designation:Student
University:Ned University of Engineering & Technology
Location:Pakistan
[b]Contact:[/b] sania_1611@yahoo.com
Article Source: ArticlesBase.com – Google Api Chart Drawing Wizard
Corpus Christi Rayz 12/13/07